Roller-mill



E. STRONG.

ROLLER MILL.

(No Model.)

Patented Nov. 20, 1883.

N. PETERS. Halal-W. wnhinglm. D. O.

UNITED STATES- PATENT 0mm.

ELI srnono, or KALAMAZOO, MICHTGAN.

ROLLER- M ILL.

SPECIFICATION forming part of Letters Patent No. 288,886, dated November20, 1883.

Application filed August 17, 1883. (No model.)

To all whom it near; concern Be it known that I, ELI STRONG, a citizenof the United States, residing at Kalamazoo, county of Kalamazoo, Stateof Michigan, have invented a new and useful Roller-Mill, of which thefollowing is a specification.

The object of my invention consists in certain improved features ofconstruction, to facilitatethe operation and increase the utility ofroller-mills.

In the drawings forming a part of this specification, -Figure 1 is anelevation of a portion of roller-mill, looking against the ends of therollers, certain parts being broken away; llig. 2, a top broken view ofthe device, show ing about one-fourth of thewhole; and Figs. 3, i, and 5are enlarged details, hereinafter explained.

B represents a supporting-frame, upon which the boxes which formbearings for the rolleis R B are located. Two of the rollers, R, termedstationary" rollers, have bearings at each end in the doublestationarybox D. The other adjustable rollers, B, have bearings at each. end inthe adjustable or sliding boxes E. A divided rod, t a, adjustablycoupled together by thimbles O O, is extended through the boxes D E,beneath the bearings of the rollers R R, and terminates at each end in ahand-wheel, F. The thimbles are located in recesses in boxes E, Fig; 1.Said thimbles have threaded perforations, in which threaded portions ofthe rods are located. By turning the hand-wheel F,-the adjustable rollerR is moved toward or from the stationary roller R.

The construction shown in the drawings illustrates one side of thedevice, the opposite side being the same.

When the hand-wheel F is turned, the thimble 6 runs ofi' or on thethreaded end of rod to. Boxes E are movably located on the frame B. S isa stud connected with box E,

and extending through the frame in an elon- "ers B. By loosening bolt iand turning up belt a, the box D is raised, and the reverse boxes D,Figs. 1 and 2.

operation lowers said box. Tension-springs r 1' are located on theadjusting-rod t, andin a recess in box E. (See left of Fig. l.) Jam-nut-s o are located on this rod, to adjust the tension of spring r.By this combination of parts, the adjusting-rods and tension-springs arein immediate relation with each other yet the operation of one does notinterfere with the action of the other. The sliding box E has a rearextension, S, extending from the box bearing to the hand-wheel F. Theoiiice of this extension, aside from supporting the end of theadjusting-rod t a, is to act as a brace, preventing the end of the boxE, which supports the roller R, from tilting up during the operation ofgrinding.

In the construction of the mill, the rollers R R are to be serratedaround their peripheries, according to the construction of such rollersfor grinding grain.

The adjustment of the rollers thus far described relates to the degreeof fineness which they grind the grain. When the mill is at rest, it isdesirable that the rollers B should be moved away from the rollers Rwithout interfering with their adjustment in regard to fineness ofgrindingthe grain. Ieffect this by locating a shaft, 6, across the framebetween the stationary rollers R, said shaft 0 having bearings at eachend in the stationary This shaft is provided with two eccentrics, c c,with which the eyes I) of the rods a are coupled, as in Fig. 2. Theshaft 0 is revolved by means of a lever, l. The construction of the eyesb and the double eccentric c c is shown in Figs. 8,

tending through the boxes, the threaded coup ling-thimbles, andhand-wheels, all substanof the, adjusting-rods, substantially asdetially as set forth. scribed and shown.

2. The combination, with the double sta- In testimony of the foregoing Ihave heretionary boxes and sliding boxes, of the divided unto subscribedmy name in the presence of 5 adjusting-rods, eoupling-thimbles,tensiontwo witnesses.

springs, and jam-nuts, substantially as described. ELI STRONG.

3. The combination, with the stationaryand WVitnesses: movable boxes,the latter having the rear ex- ARCH. W. ROWLEY, 1o tensions serving thedouble purpose set forth, P. A. SPICER.

